<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="/static/css/bootstrap.css"/>

</head>

<body>
<div class="container">
<div class="col-lg-3 text-center h2">
    这里是头的内容
</div>
</div>
</body>
</html>